Abstract

In order to study the non-destructive evaluation method of crystal orientation in metal materials, the surface of ultrasonic velocity varying with propagation angle was obtained according to the Christoffel equation of anisotropic elastic wave. The delay curve of wave front received by the phased array transducer after interface refraction was then obtained. Ni-based single crystal material was selected and samples with different crystal orientation were cut. An immersion and penetrating phased array device was used to collect the ultrasonic signals. Experimental data were fitted with spherical harmonic(SH) function. The relationship between the coefficients of the SH function and the Euler angles of the crystal orientation was established by Wigner-D function. The complete Euler angles of the samples were obtained and compared with the results of the destructive EBSD. The deviation of the crystal orientation obtained by this method was less than 20°.

How to Cite:

Zhang, C. . & Li, X. ., (2019) “Evaluating crystal orientation in ni based alloy samples using ultrasonic phased array”, Review of Progress in Quantitative Nondestructive Evaluation .